Boiler-furnace.



A. NORMAND.

BOILER PURNAGB} APPLIOATION FILED NOV. 11. 1909.

Patented Nov. 18, 1913.

QOLUMBIA PLANOQRAPH '20., WASHINGTON, D. c.

mar;

BOILER-FURNACE.

AUGUSTIN Noni/mun, or LE HAVRE,-FRA1\IGE.

Specification of Letters Patent.

orFrcE- Patented Nov. 18,1913.

Application filed November 11, 1309. Serial No. 527,423. V

To all whom it may concern.

Be it known that I, AUeUs'rIN citizen of the Republic f France, residing at Le Havre, Department of the Seine-Infrieure, have invented certain new and use ful Improvements in Boiler-Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to boiler furnaces, and the object of the invention is to provide an improved furnace by means of which the boiler may be heatedwith either oil or coal or simultaneously with bothoil and coal, as desired.

The novel features of the invention'will appear from the following description and claim.

In the accompanying drawing, Figure 1 is a vertical longitudinal section of a boiler furnace embodying the invention, and Fig. 2 is a detail view showing the manner of actuating the shutters in Fig. 1.

Referring to the drawing, the furnace proper, denoted by the numeral 1, is illustrated as of the usual form employed for the heating of boilers by means of coal, and the boiler is shown as supported on the front furnace wall 8. Below the grate 2 there is arranged an ash pit 4, communicating with the atmosphere by means of doors 5, and the doors 10 to be hereinafter described, and the grate maybe charged with fuel through the usual door 3. r

Associated with the front wall of the furnace, preferably above the door 3, are a plumixture of air and oil is produced. In the drawing, the nipple 7 is illustrated as of sleeve-like form, open at both ends, but it is to be understood that this exact construction need not-be adopted 'lI1 tll- -3ZLSS. In NORM N),

the example shown, however, when the oil is sprayed into the nipple it meets a body of air passing into the nipple through the open front end of the latter, and the burning mixture; of air and oil passes directly into the furnace, as will be understood. In order or casing 11 serving as a support and through which the air is admitted. This box is provided with doors 10 which may be either balanced or not. The box 11 communicates with the ash pit, the door 5 of which is controlled by the air itself or by appropriate operating devices. Heating may be effected by means of coal alone when the shutters 9 are closed.

' The shutters 9 are preferably actuated by the mechanism disclosed in Fig. 2 in which the shutter 9 slides in a guide-way 15 and is provided with a slot 19. A suitable bell crank lever is pivoted at 16 and one of its arms 18 carries a stud which engages in the slot 19. The second arm 17 of the said bellcrank lever can be actuated to produce a longitudinal movement of the shutter 9 in the guide-ways 15.

The invention is not limited to the constructions illustrated in the drawing; the form of the obturators may be varied and they may either be single or double with hinges or slideways and so forth. The air inlets to the ash pit may likewise be arranged in any convenient manner, either laterally or at the rear of the boiler and the operation may be automatic or otherwlse.

The arrangements described are applicable to boiler furnaces either with a natural or forced draft. The invention is also applicable to all boiler furnaces in which the air is conducted either to the closed ash pit to control the passage of air through each communicate with the interior of a furnace,

adjustable shutters at the point of communication, a casing inclosing the nipple and the ejector end of the atomizer, adjustable means in said casing for admitting air to the nipple, and means for operating the said shutters.

In testimony whereof I aifix my signature, in presence of tWo Witnesses.

AUGUSTIN NORMAND.

Witnesses:

CONSTANT GUIRARD, V GEORGE AMEs ALDRICH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

